I think a way to reroll the 3rd enchant should be made possible
maybe using other materials to reduce the pressure upon temporal gem etc
or a way to determined enchant even using 10x the mats (Sakura needed 14 tries, i think a 10x mats could be fair)
Personally i like the determined version with 10x mats or the amount you GMs find the best
because some RNG its fine, its the game thats like this, but the total insanity of this one its over the roof xd
Quick Edit: this oghC mats increased prices hurts a bit new players who wanna forge/enchant mid game equips like temporal circlets. Idk if this is still relevant of if there is a different equip route to follow